Multipurpose multi-source heat-storing compressed air energy storage system and method of same

Abstract

The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circuit.

What is claimed is: 
     
       1. A multipurpose multi-source heat-storing compressed air energy storage system, comprising a packed bed heat-storing device ( 1 ), a heat-storing circuit ( 2 ), a heat-releasing circuit ( 3 ), a gas-storing circuit ( 4 ), a photothermal circuit ( 5 ), a heating-supplying circuit ( 6 ) and a cooling-supplying circuit ( 7 ), wherein said heat-storing circuit ( 2 ) and said heat-releasing circuit ( 3 ) are connected to said packed bed heat-storing device ( 1 ), respectively, and the heat-storing heat exchanger ( 21 ) of said heat-storing circuit ( 2 ) and the heat-releasing heat exchanger ( 31 ) of said heat-releasing circuit ( 3 ) are connected with said gas-storing circuit ( 4 ), respectively, said photothermal circuit ( 5 ) is connected with said heat-storing circuit ( 2 ), said heating-supplying circuit ( 6 ) is connected with said heat-releasing circuit ( 3 ) and said photothermal circuit ( 5 ), said cooling-supplying circuit ( 7 ) is connected to said packed bed heat-storing device ( 1 ) and said photothermal circuit ( 5 ), and said photothermal circuit ( 5 ) heats said heat-storing circuit ( 2 ) and said heat-releasing circuit ( 3 ),
 wherein, the heat-storing circuit ( 2 ) includes a heat-storing pipeline, and a heat-storing heat exchanger ( 21 ) and a low-temperature canned motor pump ( 22 ) both connected in series to the heat-storing pipeline, 
 the heat-storing heat exchanger ( 21 ) and the heat-releasing heat exchanger ( 31 ) are connected to a compressor ( 23 ) and an expander ( 33 ), respectively, 
 the heat-releasing circuit ( 3 ) includes a heat-releasing pipeline, and the heat-releasing heat exchanger ( 31 ) and a high-temperature canned motor pump ( 32 ) both connected in series to the heat-releasing pipeline, and the expansion tank ( 34 ) is connected to the heat-releasing pipeline, 
 wherein, when the heat-releasing circuit ( 3 ) turns off and the heat-storing circuit ( 2 ) turns off, the heat-storing heat exchanger ( 21 ) converts high-temperature and high-pressure air into low-temperature and high-pressure air, and the heat-releasing heat exchanger ( 31 ) converts low-temperature and high-pressure air into high-temperature and high-pressure air, respectively. 
 
     
     
       2. The multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , wherein said packed bed heat-storing device ( 1 ) includes a packed bed ( 11 ) and a liquid-storing tank ( 12 ) connected to the outlet end of the packed bed ( 11 ), said heat-storing circuit ( 2 ) and said heat-releasing circuit ( 3 ) are connected to the packed bed ( 11 ) and the liquid-storing tank ( 12 ), and a pressure-stabilizing system ( 13 ) is connected to the inlet end of the packed bed ( 11 ). 
     
     
       3. The multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , wherein said gas-storing circuit ( 4 ) includes a gas-storing tank ( 41 ), and an air inlet pipeline and an air outlet pipeline both connected to the gas-storing tank ( 41 ), the air inlet pipeline and the air outlet pipeline are connected to the heat-storing heat exchanger ( 21 ) and the heat-releasing heat exchanger ( 31 ), respectively, and a gas source tube ( 42 ) is connected to the air outlet pipeline. 
     
     
       4. The multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , wherein said photothermal circuit ( 5 ) includes a photothermal pipeline, and a photothermal collector system ( 51 ) and an electrical heater ( 52 ) both connected in series to the photothermal pipeline, the photothermal pipeline is connected with said heat-storing circuit ( 2 ), said heating-supplying circuit ( 6 ) and said cooling-supplying circuit ( 7 ). 
     
     
       5. The multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , wherein said heating-supplying circuit ( 6 ) includes a heating-supplying heat exchanger ( 61 ) and a heating user terminal ( 62 ) connected with the heating-supplying heat exchanger ( 61 ), and the heating-supplying heat exchanger ( 61 ) is connected with said heat-releasing circuit ( 3 ) and said photothermal circuit ( 5 ). 
     
     
       6. The multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , wherein said cooling-supplying circuit ( 7 ) includes an absorption refrigerating system ( 71 ) and a cooling user terminal ( 72 ) connected to the absorption refrigerating system ( 71 ), and the absorption refrigerating system ( 71 ) is connected with said heat-storing circuit ( 2 ) and said photothermal circuit ( 5 ). 
     
     
       7. An energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system according to  claim 1 , comprising the following steps:
 S 1 , an energy storage step implemented by starting the compressor ( 23 ) and the low-temperature canned motor pump ( 22 ) so as to convert the high-temperature and high-pressure air into low-temperature and high-pressure air and store the latter in the gas-storing tank ( 41 ), wherein this step includes the following sub-steps: 
 S 1 - 1 , making the high-temperature and high-pressure air discharged from the compressor ( 23 ) enter the heat-storing heat exchanger ( 21 ), which absorbs heat then performs heat conversion with the low-temperature heat-transferring liquid medium in said heat-storing circuit ( 2 ); 
 S 1 - 2 , making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said heat-storing circuit ( 2 ), in which the heat-transferring liquid medium is driven by the low-temperature canned motor pump ( 22 ) to continuously circulate and continuously absorbs the heat of the heat-storing heat exchanger ( 21 ); simultaneously making the low-temperature and high-pressure air formed after cooling the high-temperature and high-pressure air enter the gas-storing tank ( 41 ) for storage; and 
 S 1 - 3 , when the heat-transferring liquid medium in the liquid-storing tank ( 12 ) reaches a preset temperature value or the low-temperature and high-pressure air in the gas-storing tank ( 41 ) reaches a preset value, ending the energy storage process; 
 S 2 , an energy release step implemented by starting the high-temperature canned motor pump ( 32 ) so as to convert the low-temperature and high-pressure air in the gas-storing tank ( 41 ) into the high-temperature and high-pressure air and deliver the latter to the expander ( 33 ) to do work, wherein this step includes the following sub-steps: 
 S 2 - 1 , making the low-temperature and high-pressure air in the gas-storing tank ( 41 ) enter the heat-releasing heat exchanger ( 31 ), which absorbs heat then performs heat conversion with the low-temperature and high-pressure air in said gas-storing circuit ( 4 ); 
 S 2 - 2 , making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said heat-releasing circuit ( 3 ), in which the heat-transferring liquid medium is driven by the high-temperature canned motor pump ( 32 ) to continuously circulate and continuously conducts its heat to the heat-releasing heat exchanger ( 21 ); simultaneously making the high-temperature and high-pressure air formed from the low-temperature and high-pressure air after absorbing heat drive the expander ( 33 ) to do work; and 
 S 2 - 3 , when the release of the low-temperature and high-pressure air in the gas-storing tank ( 41 ) reaches a preset value or the temperature of the heat-transferring liquid medium in the liquid-storing tank ( 12 ) reaches a preset value, ending the energy release process; 
 S 3 , an electrically heating step implemented by making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said photothermal circuit ( 5 ) under the drive of the low-temperature canned motor pump ( 22 ), then enter the packed bed ( 11 ) after being heated by the electrical heater ( 52 ), next flow back to the liquid-storing tank ( 12 ), in that case that the compressor ( 23 ) is not in operation; 
 S 4 , a photothermally heating step implemented by making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said photothermal circuit ( 5 ) under the drive of the low-temperature canned motor pump ( 22 ), then enter the packed bed ( 11 ) after being heated by the photothermal collector system ( 51 ), next flow back to the liquid-storing tank ( 12 ), in that case that the compressor ( 23 ) is not in operation; 
 S 5 , a heating-supplying step implemented by making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said heat-releasing circuit ( 3 ), then enter the packed bed ( 11 ) after entering said heating-supplying circuit ( 6 ) under the drive of the high-temperature canned motor pump ( 32 ), next flow back to the liquid-storing tank ( 12 ); making the heating-supplying heat exchanger ( 61 ) continuously absorb the heat of the heat-transferring liquid medium, then deliver the heat to the heating user terminal ( 62 ) after absorbing the heat, in this process; 
 S 6 , a cooling-supplying step implemented by making the heat-transferring liquid medium in the liquid-storing tank ( 12 ) enter said heat-releasing circuit ( 3 ), then enter the absorption refrigerating system ( 71 ) under the drive of the high-temperature canned motor pump ( 32 ), then making the absorption refrigerating system ( 71 ) continuously absorb the heat of the heat-transferring liquid medium to do work for refrigeration, then supply cooling to the cooling user terminal ( 72 ), next making the heat-transferring liquid medium flow back to the liquid-storing tank ( 12 ); and 
 S 7 , a gas-supplying step implemented by opening the gas source tube ( 42 ) to make the low-temperature and high-pressure air in the gas-storing tank ( 41 ) enter the gas source tube ( 42 ); making the air outlet pipeline turn off and the air inlet pipeline turn on, of the gas-storing tank ( 41 ), in the off-state of said heat-releasing circuit ( 3 ) in S 1 ; making the air outlet pipeline turn on and the air inlet pipeline turn off, of the gas-storing tank ( 41 ), in the on-state of said heat-storing circuit ( 2 ) in S 2 . 
 
     
     
       8. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said packed bed heat-storing device ( 1 ) includes a packed bed ( 11 ) and a liquid-storing tank ( 12 ) connected to the outlet end of the packed bed ( 11 ), said heat-storing circuit ( 2 ) and said heat-releasing circuit ( 3 ) are connected to the packed bed ( 11 ) and the liquid-storing tank ( 12 ), and a pressure-stabilizing system ( 13 ) is connected to the inlet end of the packed bed ( 11 ). 
     
     
       9. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said heat-storing circuit ( 2 ) includes a heat-storing pipeline, and a heat-storing heat exchanger ( 21 ) and a low-temperature canned motor pump ( 22 ) both connected in series to the heat-storing pipeline. 
     
     
       10. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein the heat-storing heat exchanger ( 21 ) and the heat-releasing heat exchanger ( 31 ) are connected to a compressor ( 23 ) and an expander ( 33 ), respectively. 
     
     
       11. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said heat-releasing circuit ( 3 ) includes a heat-releasing pipeline, and the heat-releasing heat exchanger ( 31 ) and a high-temperature canned motor pump ( 32 ) both connected in series to the heat-releasing pipeline, and the expansion tank ( 34 ) is connected to the heat-releasing pipeline. 
     
     
       12. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said gas-storing circuit ( 4 ) includes a gas-storing tank ( 41 ), and an air inlet pipeline and an air outlet pipeline both connected to the gas-storing tank ( 41 ), the air inlet pipeline and the air outlet pipeline are connected to the heat-storing heat exchanger ( 21 ) and the heat-releasing heat exchanger ( 31 ), respectively, and a gas source tube ( 42 ) is connected to the air outlet pipeline. 
     
     
       13. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said photothermal circuit ( 5 ) includes a photothermal pipeline, and a photothermal collector system ( 51 ) and an electrical heater ( 52 ) both connected in series to the photothermal pipeline, the photothermal pipeline is connected with said heat-storing circuit ( 2 ), said heating-supplying circuit ( 6 ) and said cooling-supplying circuit ( 7 ). 
     
     
       14. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said heating-supplying circuit ( 6 ) includes a heating-supplying heat exchanger ( 61 ) and a heating user terminal ( 62 ) connected with the heating-supplying heat exchanger ( 61 ), and the heating-supplying heat exchanger ( 61 ) is connected with said heat-releasing circuit ( 3 ) and said photothermal circuit ( 5 ). 
     
     
       15. The energy storage and energy release method of the multipurpose multi-source heat-storing compressed air energy storage system of  claim 7 , wherein said cooling-supplying circuit ( 7 ) includes an absorption refrigerating system ( 71 ) and a cooling user terminal ( 72 ) connected to the absorption refrigerating system ( 71 ), and the absorption refrigerating system ( 71 ) is connected with said heat-storing circuit ( 2 ) and said photothermal circuit ( 5 ).